import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.mapreduce.Job;
import java.io.IOException;
public class MapReduceTest {
    public static void main(String[] args) throws InterruptedException,
            IOException, ClassNotFoundException {
        Configuration conf = new Configuration();
        conf.set("fs.defaultFS", "hdfs://node1:8020");
        String[] otherArgs = new String[]{"test2", "test2/output"};
        if (otherArgs.length != 2) {
            System.err.println("Usage: ContentSort <in> <out>");
            System.exit(2);
        }
        Job job = Job.getInstance(conf, "ContentSort");
        job.setJarByClass(MapReduceTest.class);
        job.setMapperClass(Map.class);
        job.setReducerClass(Reduce.class);
        job.setOutputKeyClass(IntWritable.class);
        job.setOutputValueClass(IntWritable.class);
        FileInputFormat.addInputPath(job, new Path(otherArgs[0]));
        FileOutputFormat.setOutputPath(job, new Path(otherArgs[1]));
        System.exit(job.waitForCompletion(true) ? 0 : 1);
    }
}